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mfansler/xargs_parallel_syntax.sh

Created July 22, 2022 16:38
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Notes on xargs syntax for parallel execution
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xargs_parallel_syntax.sh
#!/bin/bash
## space-separated input
## -n1: run each separately
## -P6: run up to 6 in parallel
## -I '{}': replace {} with argument
## \$ delays evaluation to bash execution
## waits randomly for up to five seconds, then prints
echo {1..12} |\
xargs -n1 -P6 -I '{}' \
bash -c "sleep \$[ \$RANDOM % 5 ]; echo {}"
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